| 摘要 |
<p>An outer rotor type multipolar generator comprising a stator attached to a fixed support section, and a rotor that is coaxially fixed to the end of a drive shaft rotatably supported by the support section and that has a magnet fixed to the inner periphery of a bottomed cylindrical rotor yoke coaxially covering the stator, with cooling air allowed to flow in a fixed casing covering the stator and rotor, wherein the closed end of the rotor yoke (21) is integrally provided with a plurality of radially extending blades (23c), with a plurality of air suction holes (25) positioned between the blades (23c). This reduces the number of parts and improves assembling efficiency, and makes it possible to relatively shorten the axial length of the entire generator while avoiding the lowering of rotor support rigidity, and to effect efficient cooling.</p> |
